Rockwell-automation 900 Temperature Controller Communications Function Manual do Utilizador descarregar pdf (Página 75)

Publication 900-UM004D-EN-E - July 2010

Modbus Communications Procedure 4-17

Error Occurred

Example Command and Response

The following example shows the command/response for a Stop command.

(In this case, the slave address is H’01.)

Stop command (command code: H’01; related information: 01)

· Address: H’0000 (fixed)

Write data: H’0101 (Run/Stop, Stop command)

Figure 4.17

Table 4.14

Function

code

Error code Name Description

H’86 H’02 Variable address

error

• The write variable address is

incorrect.

• The variable area number (2-byte

data) is wrong, or the address is

not 0000 or FFFF.

H’03 Variable data

error

The write data is incorrect.

• The write data is out of the

setting range.

• Command code or related

information is incorrect

H’04 Operation error The Controller cannot write the data

in its present operating status.

• The Communications Writing

parameter is set to “OFF”

(disabled). The command is

received regardless of the

Communications Writing

parameter setting (ON/OFF).

• Writing was attempted from

setup area 0 to setup area 1.

• Writing was attempted to a

protected parameter from

outside the protect level.

• AT execution was in progress.

• Processing could not be

performed. For details, refer

to Operation Commands and

Precautions on page 4-18

01 06 00 00 01 01 49 9A(CRC-16)

Command:

Response:

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 102 103

Comentários a estes Manuais

Sem comentários

Rockwell-automation 900 Temperature Controller Communications Function Manual do Utilizador Página 75

Comentários a estes Manuais

Manuais e produtos relacionados com Equipamento Rockwell-automation 900 Temperature Controller Communications Function